Monitoring of atmospheric methane and nitrous oxide concentrations from Metop/IASI

O. García, M. Schneider, B. Ertl, E. Sepúlveda, C. Borger, C. Diekmann, F. Hase, F. Khosrawi, A. Cansado, M. Aullé


Future of the Earth-atmosphere system will depend, to a large extent, on our capability of understanding all the processes driving climate change and, in this context, of outstanding importance are the monitoring and the investigation of greenhouse gases (GHGs), as main drivers of the Earth’s climate change. With this idea the project INMENSE (IASI for Surveying Methane and Nitrous Oxide in the Troposphere) was born, which aims to improve our current understanding of the atmospheric budgets of two of the most important well-mixed greenhouse gases, methane (CH4) and nitrous oxide (N2O). To this end, INMENSE has generated a new global observational data set of middle/upper tropospheric concentrations of CH4 and N2O from the space-based remote sensor IASI (Infrared Atmospheric Sounding Interferometer), on board the meteorological satellites EUMETSAT/Metop. In this work the INMENSE IASI CH4 and N2O products are presented, characterized and comprehensively validated by using a multiplatform reference database (aircraft vertical profiles, ground-based in-situ and remote-sensing observations). This extensive validation exercise suggests that the IASI CH4 and N2O products shows a precision between 1-3% and a bias of 2% as well as they are consistent temporally and spatially. Finally, the CH4 and N2O IASI observations over the Iberian Peninsula have been compared to MOCAGE chemical transport simulations, assessing the degree of agreement between both datasets.



methane; nitrous oxide; IASI; INMENSE

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August, T., Klaes, D., Schlüssel, P., Hultberg, T., Crapeau, M., Arriaga, A., O’Carroll, A., Coppens, D., Munro, R., Calbet, X. 2012. IASI on Metop-A: Operational Level 2 retrievals after five years in orbit, Journal of Quantitative Spectroscopy and Radiative Transfer, 113, 1340-1371.

Brocchi, V., Krysztofiak, G., Catoire, V., Guth, J., Marécal, V., Zbinden, R., El Amraoui, L., Dulac, F., Ricaud, P. 2018. Intercontinental transport of biomass burning pollutants over the Mediterranean Basin during the summer 2014 ChArMEx-GLAM airborne campaign, Atmospheric Chemistry and Physics, 18, 6887-6906. acp-18-6887-2018

Crevoisier, C., Nobileau, D., Fiore, A.M., Armante, R., Chédin, A., Scott, N.A. 2009. Tropospheric methane in the tropics – first year from IASI hyperspectral infrared observations, Atmospheric Chemistry and Physics, 9, 6337-6350.

García, O.E., Sepúlveda, E., Schneider, M., Hase, F., August, T., Blumenstock, T., Kühl, S., Munro, R., Gómez-Peláez, Á.J., Hultberg, T., Redondas, A., Barthlott, S., Wiegele, A., González, Y., Sanromá, E. 2016. Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O3 , CO, N2 O, CH4 , and CO2 ) in the subtropical North Atlantic, Atmospheric Measurement Techniques, 9, 2315-2333. https://

García, O.E., Schneider, M., Ertl, B., Sepúlveda, E., Borger, C., Diekmann, C., Wiegele, A., Hase, F., Barthlott, S., Blumenstock, T., Raffalski, U., Gómez-Peláez, A., Steinbacher, M., Ries, L., de Frutos, A.M. 2018. The MUSICA IASI CH4 and N2 O products and their comparison to HIPPO, GAW and NDACC FTIR references, Atmospheric Measurement Techniques, 11, 4171-4215.

IPCC. 2013. Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 1535 pp.

Josse, B., Simon P., Peuch, V.H. 2004. Rn-222 global simulations with the multiscale CTM MOCAGE, Tellus, 56B, 339-356. j.1600-0889.2004.00112.x

Lefèvre, F., Brasseur, G.P., Folkins, I., Smith, A.K., Simon, P. 1994. Chemistry of the 1991-1992 stratospheric winter: three-dimensional model simulations, Journal Geophysics Research, 99(D4), 8183-8195.

Meteo-France and all CAMS_50 modelling teams. 2017. Regional Production. Description of the operational models and of the ENSEMBLE system - October 2016, Copernicus Atmosphere Monitoring Service, disponible en https://atmosphere. CAMS50_factsheet_201610_v2.pdf.

Naik, V., Voulgarakis, A., Fiore, A.M., Horowitz, L.W., Lamarque, J.F., Lin, M., … , Zeng, G. 2013. Preindustrial to present-day changes in tropospheric hydroxyl radical and methane lifetime from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP), Atmospheric Chemistry and Physics, 13, 5277-5298. https://doi. org/10.5194/acp-13-5277-2013

Ricaud, P., Attié, J.L., Teyssèdre, H., El Amraoui, L., Peuch, V.H., Matricardi, M., Schluessel, P. 2009. Equatorial total column of nitrous oxide as measured by IASI on MetOp-A: implications for transport processes, Atmospheric Chemistry and Physics, 9, 3947-3956.

Ricaud, P., Sič, B., El Amraoui, L., Attié, J.L., Zbinden, R., Huszar, P., Szopa, S., Parmentier, J., Jaidan, N., Michou, M., Abida, R., Carminati, F., Hauglustaine, D., August, T., Warner, J., Imasu, R., Saitoh, N., Peuch, V.H. 2014. Impact of the Asian monsoon anticyclone on the variability of mid-to-upper tropospheric methane above the Mediterranean Basin, Atmospheric Chemistry and Physics, 14, 11427-11446,

Rodgers, C., 2000. Inverse Methods for Atmospheric Sounding: Theory and Praxis, Singapore, World Scientific Publishing Co.

Schneider, M., Hase, F. 2011. Optimal estimation of tropospheric H2 O and dD with IASI/METOP, Atmospheric Chemistry and Physics, 11, 11207- 11220.

Schneider, M., Wiegele, A., Barthlott, S., González, Y., Christner, E., Dyroff, C., García, O.E., Hase, F., Blumenstock, T., Sepúlveda, E., Mengistu Tsidu, G., Takele Kenea, S., Rodríguez, S., Andrey, J. 2016. Accomplishments of the MUSICA project to provide accurate, long-term, global and high-resolution observations of tropospheric {H2 O, δD} pairs – a review, Atmospheric Measurement Techniques, 9, 2845-2875.

Stockwell, W.R., Kirchner, F., Kuhn, M., Seefeld, S. 1997. A new mechanism for regional atmospheric chemistry modelling, Journal Geophysics Research, 102, 25847-25879.

Teyssèdre, H., Michou, M., Clark, H.L., Josse, B., Karcher, F., Olivié, D., Peuch, V.H., SaintMartin, D., Cariolle, D., Attié, J.L., Nédélec, P., Ricaud, P., Thouret, V., van der A, R.J., Volz-Thomas, A., Chéroux, F. 2007. A new tropospheric and stratospheric Chemistry and Transport Model MOCAGE-Climat for multiyear studies: evaluation of the present-day climatology and sensitivity to surface processes, Atmospheric Chemistry and Physics, 7, 5815-5860.

Tikhonov, A.: On the solution of incorrectly stated problems and a method of regularization, Dokl. Acad. Nauk SSSR, 151, 501-504, 1963.

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